The parks represent the top energy users within the Conejo Recreation & Park District.

The district's board of directors in November approved a 25-year power purchase agreement with CRPD Solar 1 LLC, a group formed by Camarillo-based SolarWorld Power Group LLC.

The solar company will provide the work and money for construction, installation and future maintenance and operation of the solar panels. The park district will buy energy from CRPD Solar 1 at a lower rate than it would from Southern California Edison.

Over the agreement's life, the district's system is expected to generate about 17.3 million kilowatts of renewable energy. It will save the park district an estimated $3.4 million.

Work will begin at this week at Thousand Oaks Community Park and Conejo Creek South, where 528 panels and 264 panels, respectively, will be installed.

Borchard will have 624 panels covering 64 parking spaces, while Dos Vientos will have a carport with 576 panels covering 58 spaces. Work at those parks will start next month.

Construction at each location is expected to take five to six weeks, and officials expect all four solar panel carports will be up and running by late October.